Combination mount for machine guns



Nev. 30 1926. 8,595

s. G. GREEN ET AL COMBINATION MOUNT FOR MACHINE GUNS Filed @019, 1925 2Sheets-Sheet 2 amma], 11. Green V LIETHESL-HE.EE1LET CQMIEEENATIGNllt'llb'll'fi EAGEELTIE olication filecl (late-her 9 i. i

naention described erein may he the Government, or of o employees inprosecution of WQI'K 'o erninent, or by any otl er per- 51. its

e States without payment oyalty thereoa in aecorance ;,ct rlllarcli 31883 .llllS inv ntion relates to a combination for machine guns, to 1ththe advent aircraft in Warfare t e err ioyrnentol machine gun fire ineorolaating it heconoes necessary to clevise mount which while embodyingall the essential requirements of the mount when. gronncl targets may aoinents notice he converted into mount feel to oermit high angle tiringl targets with proper aiming elation the gun. This duel enrniust heaccomplished by combining e greatest possible extent the require orsimplicity, compactness, and light si n-t characteristics of rigiafoilit y oonvenience in adjusting the to its firing position and;folding it ansportation and provision for accurate acljustrnent oi": thegun in azimuth ancl ratios, nor against ground targets, a gun "est hecapable of being operated from a stable mounting tor the protection ofthe cret: advancing lrienclly oops lent firing agains rapitlly m0?"aerial ts a high mount or grime consicleration to facilitate aiming anclriyulation the gun.

ese end other encls the present inveneontempletes sun crarlle Whose azisof e" is in the 19 one of the axis oisaw a "which may he readilyeleretecl to v ially vertical posi ion to mount not for high angle tireagainst aircraft, "i enrl of the cradle constitutes a tor trunnioningthe gen when in this sition, lhe yoke is offset with respect to s ecradle so that when the cradle is positioned coincident with the axisoi? traverse mass or the cradle will be forwardly of the gun trnnnionsmay tend to compensate the rearward thrust transmitted to rno mount onrecoil V lne s s Serial (title.

was;

ily he removecl if desired when swung to the vertical to usetl snlreircre'lt aclaptor.

To these and other ends, our consists in the constructiorr orcombination of elements, {WW inatter and pointed; out in he claims forna part or this specification,

practical embodiment of the intention is illustrated in the accompanyingdrewinge wherein:

Fig. l is a View in sirle elevation of e niountconstructed in accordancewith the invention and acljustecl tor low angle firing;

big 2 is a plan View thereot;

3 1s VlEW in side elev-tion li the cradle swung to the verticalpfiStliluw.

used as anti-aircratt 13 .a vertical sectional met-7 the t "ocl oeacl onthe line ll s is a horizontal =2 A. no u u oirig, in

erring to the rlrotririgs ly 'lnirnerels some the lorin or" a 9 socketmember 5 to which he ecl iustably securecl the customary less a lllonntecl in the socket is a p re 6 on the lower encl or: which may hethreaded a not 8 serving; to hold the pintle against removal hearingagainst a spring 5% which corn pens-a es tor Wear it friction clamp trated in the soclret, sncl having a hancl ine 'ically With an npstanchngwhich secured on each side ezrt serratecl cliscs 12-l:?-u aizis heacleelat one end ancl screw threaclecl at the other encl passes through thelug discs and serves to mount for movement in elevation e craclle 14sThe cradle comprises a pair ot similar plates l5-15 rigidly connected attheir rear portions by spacers 16, their for ward portions losingresilient and provided with serrated discs l'l fl ariaptecl to engegethe corresponding discs 12 on the, ll "when the cradle plates drawn toge er by means of jammi g; hanclle l8 on the end. :Jlfi

sectional View on washer or ring 19 may be pinned on the extremity ofthe axis pin to preventloss of the jamming handle. r

The cradle plates 15 are formed forward ly oi. the axis pin 13 :and ontheir upper sides with ears 2020 preferably fitted with aperturedbushings 21 between which may be placed the trunnion block of themachine gun 22 secured by the customary handled trunnion pin 22. j theweight of the gun forwardly of the cradle trunnions and results inoffset of thrust or whip of the on, both of which materially assist insta ilizing'the mount. The rear end of, the gun may be supported in theusual manner by an elevating screw 23 carried in a housing 24: which ispivoted between the cradle plates by means of a pair of short headedbolts 25 threaded in the plates. These bolts may be readily unloosed toremove the elevating unit when the cradle is to be permanently used asan anti-aircraft adaptor.

The free end of the cradle constitutes a yoke 26 provided with aperturedbushings 27 to form bearings for the trunnion pm when the cradle isswung to the vertical in using it as an adaptor. In this adjustment itis desirable that the trunnion be located in the plane of the axis ofthe pintle and such a positioning is permittedby the serrated jointwhich provides a positive lock for holding the cradle at all angles ofelevation. V

The yoke 26 in which the trunnion bearings 27 are situated is preferablyoffset with respect to the cradle so that when used to mount'the gun forfiring against aircraft the mass of the cradle will be forwardly of thegun and trunnions and may tend to compensate for the rearward thrusttransmitted to the mount on recoil. This arrangement, among otherthings, facilitates traversing of the gun and insures a more stablemount. If desired the offset yoke may be swivelly mounted on the cradleinstead of being intogral therewith.

An azimuth scale ring 30 encircling the head of the pintle is rotatablymounted in a groove in the upper face of the socket memher and may besecured in adjusted position by means of a clamp 81. The scale face ofthe ring is at an angle of 45 to permit ready reading of the scale.

We claim:

1. A mount for machine guns embodying a socket member, a pintle mountedtherein and provided diametrically with an upstanding lug having annularserrated sides, a headed axle pin passing through said lug,

' a combination cradle including side plates tlli rigidly connected attheir rear portion and having a resilient forward portion mountable onthe time pin, serrated discs on said forward portions adapted to engagethe ser This arrangement throws incense rated lug, a jamming handle onthe axle pin for contracting the cradle plates to engage the serrations,trunnion hearings in the 'f orward upward sides of the cradle plates, anelevating mechanism pivoted adjacent the free end of the cradle,trunnion hearings in the free ends of the cradle plates, said ends beingoffset so that when their bearin s are coincident with the axis of thepint e the cradle may tend to compensate for the thrust transmitted tothe mount.

2. A mount for machine guns embodying a socket member, a pintle mountedtherein and provided diametrically with an n standing lug having annularserrated sides, a headed axle pin passing through said lug, acombination cradle including side plates mountable on the axle pin,serrated discs on said forward portions adapted to engage the serratedlug, a jamming handle/on the axle pin for contracting the cradle platesto engage the serrations, trunnion bearin in the forward upper sides ofthe cradle p ates, an elevating mechanism pivoted adjacent the free endof the cradle, and trunnion hearings in the free end of the cradleplates.

3. A mount for machine guns embodying a socket member, a pintle mountedtherein, a headed axle pin passing through the upper end of the pintle,a cradle including side plates mountable on the axle pin a jamminghandle on the pin for holding the cradle in position of elevation, meansfor supporting a gun for low angle fire on the cradle,'trunnion hearingsin the free ends of the cradle plates for supporting a gun for highangle tire, said free ends being offset so that when their bearings arecoincident with the axis of the pintle the cradle may tend to compensatefor the thrust transmitted to the mount.

4. A mount for machine guns embodying a socket member, ,a pintle mountedtherein, a headed axle pin passing through the up er end of the pintle,a cradle including side plates mountable on the axle pin, a jamminghandle on the pin for holding the cradle in position of elevation,means-for supporting a gun for low angle fire on the cradle, trunnionhearings in the free ends of the cradle plates for supporting a gun forhigh angle 5. A mount for machine guns embodying a. support, a cradlepivoted to the support for movement in elevation and having its free endofiset, means for holding the cradle in adjusted position, -meansincluding an elevating mechanism for mounting a gun on the cradle forlow angle fire, and trunnion bearings in the offset free ends of thecradle for mounting a gun for high angle fire, said cradle beingdimensioned so that when the bearings are coincident with the axis ofthe support it will substantially compensate for the reaction due torecoil in the gun trunnions.

eoeoee A. mount for machine guns embodying a support, a cradle pivotedto the support for movement in elevation and. having its free endoffset, means to]? holding the cradle in e'djusted position, means formounting a gun on the cradle for low angle fire, end trunnion bearingsin the offset free ends of the cradle for mounting e gun for high anglefiffl.

'21 A mount for machine guns embodying a.

support, a cradle pivoted to the support for movement in elevation,means for holding the cradle in adjusted position, means for mounting agun on the cradle for low an le tire, and means whereby the gun may bemounted for high angle fire on the free end of the cradle.

SAMUEL Gr, GREEN. JAMES L. HATCHER.

